A STUDY OF SILVER NITRATE SOLUTIONS IN GAS CHROMATOGRAPHY

Silver nitrate, dissolved in some organic solvents, has formed a relatively specific medium for the gas chromatographic separation of olefins. Columns formed from ethylene glycol and glycerin solutions of silver nitrate are comparable, but those formed from the polyethylene glycol solutions are considerably less effective. These silver nitrate solutions were stable below 65 °C, but began to decompose slowly at 85 °C.

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Induction period of the crystallization of silver nitrate solutions in ethylene glycol

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19912142 ◽

1991 ◽

Vol 56 (10) ◽

pp. 2142-2147

Author(s):

Ivo Sláma

Keyword(s):

Ethylene Glycol ◽

Silver Nitrate ◽

Induction Period ◽

Glass Forming Ability ◽

Transformation Theory ◽

Concentration Region ◽

Glass Forming ◽

Temperature Transformation ◽

Silver Nitrate Solutions ◽

Nitrate Solutions

The dependence of the induction period of crystallization on supercooling was examined for the silver nitrate-ethylene glycol system over the concentration region of silver nitrate lome fraction of 0 to 0.12. Addition of AgNO3 to ethylene glycol was found to increase considerably the critical induction period of crystallization, although to a lesser extent than Ca(NO3)2, CaCl2, ZnCl2, LiCl and LiNO3 do. The effect of these salts on the critical induction period of crystallization in dimethylsulfoxide, dimethylformamide, dimethylacetamide and methanol was compared in terms of the solvent-rich composition limit of the glass-forming ability. By using the TTT(Time-Temperature-Transformation) theory, it has been deduced that the effect of the salts on the critical induction period of crystallization of ethylene glycol is probably due to the different dependences of viscosity on their concentration in ethylene glyco in the supercooling region.

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Gas Chromatographic Separation of Unsaturated Hydrocarbons Using Silver Nitrate in Ethylene Glycol as the Stationary Phase.

Acta Chemica Scandinavica ◽

10.3891/acta.chem.scand.16-0351 ◽

1962 ◽

Vol 16 ◽

pp. 351-358 ◽

Cited By ~ 34

Author(s):

Bengt Smith ◽

Ragnar Ohlson ◽

Warren Evans ◽

G. A. Sim ◽

Olof Theander ◽

...

Keyword(s):

Ethylene Glycol ◽

Stationary Phase ◽

Silver Nitrate ◽

Chromatographic Separation ◽

Unsaturated Hydrocarbons ◽

Gas Chromatographic Separation

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Enantioselective Gas Chromatographic Separation of Racemic N-alkylated Barbiturates: Application of C11-Chirasil-Dex as Chiral Stationary Phase in GC

Analytical Chemistry Insights ◽

10.4137/117739010700200003 ◽

2007 ◽

Vol 2 ◽

pp. 117739010700200

Author(s):

Ashraf Ghanem

Keyword(s):

Gas Chromatography ◽

Stationary Phase ◽

Chromatographic Separation ◽

Chiral Stationary Phase ◽

Enantiomeric Separation ◽

Enantioselective Gas Chromatography ◽

Gas Chromatographic Separation ◽

New Stationary Phase

Chirasil-β-Dex containing an undecamethylene spacer (C11-Chirasil-Dex) was synthesized and used as chiral stationary phase (CSP) in enantioselective gas chromatography (GC). The versatility of the new stationary phase in the simultaneous enantiomeric separation of a set of N-alkylated barbiturates is demonstrated.

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